2021
DOI: 10.36829/63cts.v7i2.826
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Identificación de marcadores moleculares (SNP) y genes candidatos asociados a la tolerancia genética al complejo mancha de asfalto en variedades nativas de maíz (Zea mays L.)

Abstract: El complejo mancha de asfalto (CMA) en maíz (Zea mays L.), causado por los hongos Phyllachora maydis Maubl. y Monographella maydis Müller & Samuels, es una enfermedad de importancia económica en Guatemala, causando pérdida en el rendimiento entre 30 a 50%, inclusive del 100% si las condiciones son favorables. El objetivo de esta investigación fue identificar marcadores de un solo nucleótido o SNP (Single Nucleotide Polymorphism, por sus siglas en inglés) y genes candidatos asociados a la tolerancia genétic… Show more

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“…The regulation of ABA-signaling genes was associated with the overexpression of TFs, with their highest values observed at 15 min. TFs are members of the HD-ZIP, bZIP, C2H2, and AP2 families, such as ZAT12 (C2H2 family), that participate in the induction and repression of cold-responsive and oxidative stress genes [ 60 ]; HOX22 (HD-ZIP family) is involved in the defense mechanism of pathogen-related stress response of fungi [ 61 ], and drought- [ 62 ] and heat-stress-tolerance-induced HOX24 [ 63 ] and MYBS1 [ 64 ] are the essential components of the sugar signaling pathway regulating the α-amylase gene promoter [ 65 ]. A high expression level was found for DREB1G (AP2 family), which is a typical C-repeat-binding factor (CBF/DREB1) whose specific functions was found to be related to cold stress response [ 66 , 67 ].…”
Section: Discussionmentioning
confidence: 99%
“…The regulation of ABA-signaling genes was associated with the overexpression of TFs, with their highest values observed at 15 min. TFs are members of the HD-ZIP, bZIP, C2H2, and AP2 families, such as ZAT12 (C2H2 family), that participate in the induction and repression of cold-responsive and oxidative stress genes [ 60 ]; HOX22 (HD-ZIP family) is involved in the defense mechanism of pathogen-related stress response of fungi [ 61 ], and drought- [ 62 ] and heat-stress-tolerance-induced HOX24 [ 63 ] and MYBS1 [ 64 ] are the essential components of the sugar signaling pathway regulating the α-amylase gene promoter [ 65 ]. A high expression level was found for DREB1G (AP2 family), which is a typical C-repeat-binding factor (CBF/DREB1) whose specific functions was found to be related to cold stress response [ 66 , 67 ].…”
Section: Discussionmentioning
confidence: 99%